Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
97,067
PANGAEA - Data Publisher for Earth & Environmental Science
17,408
Unknown
11,178
Directory of Open Access Journals: DOAJ Articles
9,759
Research Data Australia (Australian National Data Service - ANDS)
7,774
Springer Nature (via Crossref)
7,391
Natural Environment Research Council: NERC Open Research Archive
7,198
Zenodo
7,147
ScienceDirect (Elsevier - via Crossref)
6,307
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
5,589
Cambridge University Press
5,229
National Institute of Polar Research Repository, Japan
4,929
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4,657
Ohio State University (OSU): Knowledge Bank
3,623
PubMed Central (PMC)
3,498
eCite UTAS (University of Tasmania)
3,331
Wiley Online Library (via Crossref)
3,325
Université de Nantes: HAL-UNIV-NANTES
3,288
Institut national des sciences de l'Univers: HAL-INSU
2,940
Copernicus Publications: E-Journals
2,655
Informa (via Crossref)
2,376
Wiley Online Library
2,354
IEDA: Marine-Geo Digital Library (via DataONE)
2,085
LeibnizOpen (The Leibniz Association)
2,073
ScienceDirect (Elsevier)
1,984
Niedersächsisches Online-Archiv NOA
1,802
NASA Technical Reports Server (NTRS)
1,723
Digital.CSIC (Spanish National Research Council)
1,676
University of Tasmania: UTas ePrints
1,665
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1,516
MDPI Open Access Publishing
1,413
University of California: eScholarship
1,400
Biodiversity Heritage Library (BHL)
1,359
AU Digital Research Archive (American University)
1,349
National Library of Australia: Digital Collections
1,241
David Rumsey Historical Map Collection (Cartography Associates)
1,149
HAL Sorbonne Université
1,138
Oxford University Press (via Crossref)
1,110
Frontiers: Figshare
1,076
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1,037
Australian National University: ANU Digital Collections
1,035
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
1,016
Defense Technical Information Center: DTIC Technical Reports database
955
University of Southampton: e-Prints Soton
931
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
892
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
881
Université Grenoble Alpes: HAL
881
HighWire Press (Stanford University)
861
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
834
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
806
more ...